Red snapper are among the pricey species of fish that unscrupulous operators may replace with mislabeled, cheaper fish.

Written by

Elizabeth Weise

A fillet of rare red snapper could really be cheap tilapia. A pricey wild-caught salmon steak from Alaska could be farmed Atlantic salmon from Chile.

Those are some of the substitutions found during a two-year investigation of seafood by the world's largest ocean conservation group. One-third of the fish purchased in restaurants, supermarkets and sushi counters was mislabeled, the nonprofit group Oceana said in a report out Thursday.Hard to tell where ...